Hyzaar (Losartan / Hydrochlorothiazide) is a combination medicine that lowers your blood pressure. Hydrochlorothiazide is a diuretic that removes extra water from your body. Losartan is an angiotensin receptor blocker (ARB) that relaxes your blood vessels to lower you blood pressure and allow more blood and oxygen to get to your heart and other organs.

Cozaar (Losartan) is an angiotensin receptor blocker (ARB). It blocks a chemical that tightens blood vessels. This makes blood vessels relax, which lowers blood pressure and allows more blood and oxygen to get to your heart and other organs.

Microzide (Hydrochlorothiazide (Hctz)) is a thiazide diuretic (water pill). It works in the kidneys to make you urinate more, which removes extra water and certain electrolytes. This lowers blood pressure and swelling.

› Hyzaar (Losartan / Hydrochlorothiazide) has a risk of making your kidneys not work as well. It is important to get blood work done to check your kidney function before starting Hyzaar (Losartan / Hydrochlorothiazide) and at least annually after.